package exam;

public class Plane {
	static String s = "-";
	public static void main (String[] args) {
		new Plane().s1();
		System.out.println(s);
	}
	
	void s1() {
		try { s2(); }
		catch (Exception e)	{ s += "C"; }
	}
	
	void s2() throws Exception {
		s3();	s += "2";
		s3();	s += "2b";
	}
	
	void s3() throws Exception {
		throw new Exception();
	}
}
